- Geology. noting or pertaining to a period of the Paleozoic Era occurring from about 280 to 230 million years ago and characterized by a profusion of amphibian species.
- Geology. the Permian Period or System.
Origin of Permian
Examples from the Web for permian
I am today in Odessa, Texas, here to speak this afternoon at the University of Texas of the Permian Basin.Tourist Attractions of West Texas
November 1, 2012
Physically, the transition from the Permian to the Trias is easy.
In the marls and sandstones of the Permian period there is also much gypsum.
Still the Permian has some life features of its own, and we must now turn to these.
The upper series is named the Permian, from the province of Perm in Russia.The Elements of Geology
William Harmon Norton
Proreptilia are represented by the Permian genera Eryops and Cricotus.The Last Link
- of, denoting, or formed in the last period of the Palaeozoic era, between the Carboniferous and Triassic periods, which lasted for 60 000 000 years
- the Permian the Permian period or rock system
Word Origin and History for permian
1841, "pertaining to the uppermost strata of the Paleozoic era," named by British geologist Sir Roderick Impey Murchison (1792-1871) for the region of Perm in northwestern Russia, where rocks from this epoch are found.
- The seventh and last period of the Paleozoic Era, from about 286 to 245 million years ago. During the Permian Period the supercontinent Pangaea, comprising almost all of today's landmasses, formed. Gymnosperms evolved, the first modern conifers appeared, and reptiles diversified. The Permian Period ended with the largest known mass extinction in the history of life. It wiped out nearly 90 percent of known marine life forms. See Chart at geologic time.